← All parts of this equation

Equation 13 · Part 1 · The Bend an Elevator Cannot Fake

Symbol j

jj
jj

What this part means

j is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

Its job in the formula

j is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.

The passage around this formula

…convenient physical route without first specifying which route was used. Define the dimensionless node potential ϕ(x)\phi(\mathbf x) := ln⁡\ln U(x\mathbf x) and the edge observable actually recorded between linked clocks i and j ,

Read this part in the article →

Learn the underlying idea

A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.

Open the illustrated variables: a letter stands for a value guide →

See this notation across published equations →

The article lists its research sources here.